diff --git a/.travis.yml b/.travis.yml
index 429cdca..5d87a4c 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -13,37 +13,37 @@ env:
 matrix:
   fast_finish: true
   include:
-    - php: 7.1
+    - php: 7.3
       env:
         - DEPS=lowest
-    - php: 7.1
+    - php: 7.3
       env:
         - DEPS=latest
-        - CS_CHECK=true
-        - TEST_COVERAGE=true
-    - php: 7.2
+    - php: 7.4
       env:
         - DEPS=lowest
-    - php: 7.2
+    - php: 7.4
       env:
         - DEPS=latest
-    - php: 7.3
+    - php: 7.4
       env:
         - DEPS=lowest
-    - php: 7.3
+        - COMPOSER_VERSION=2
+    - php: 7.4
       env:
         - DEPS=latest
-    - php: 7.4
+        - COMPOSER_VERSION=2
+    - php: nightly
       env:
         - DEPS=lowest
-    - php: 7.4
+    - php: nightly
       env:
         - DEPS=latest
-    - php: 7.4
+    - php: nightly
       env:
         - DEPS=lowest
         - COMPOSER_VERSION=2
-    - php: 7.4
+    - php: nightly
       env:
         - DEPS=latest
         - COMPOSER_VERSION=2
diff --git a/composer.json b/composer.json
index 69c8e3b..9d98440 100644
--- a/composer.json
+++ b/composer.json
@@ -25,7 +25,7 @@
         "class": "Laminas\\ComponentInstaller\\ComponentInstaller"
     },
     "require": {
-        "php": "^7.1",
+        "php": "^7.3 || ~8.0.0",
         "composer-plugin-api": "^1.0 || ^2.0",
         "laminas/laminas-zendframework-bridge": "^1.0"
     },
@@ -34,7 +34,8 @@
         "laminas/laminas-coding-standard": "~1.0.0",
         "malukenho/docheader": "^0.1.6",
         "mikey179/vfsstream": "^1.6.7",
-        "phpunit/phpunit": "^7.5.15 || ^8.3.4"
+        "phpspec/prophecy-phpunit": "^2.0",
+        "phpunit/phpunit": "^9.3"
     },
     "autoload": {
         "psr-4": {
diff --git a/phpunit.xml.dist b/phpunit.xml.dist
index 7d8a4dd..fca4ccb 100644
--- a/phpunit.xml.dist
+++ b/phpunit.xml.dist
@@ -9,9 +9,9 @@
         </testsuite>
     </testsuites>
 
-    <filter>
-        <whitelist processUncoveredFilesFromWhitelist="true">
+    <coverage processUncoveredFiles="true">
+        <include>
             <directory suffix=".php">src</directory>
-        </whitelist>
-    </filter>
+        </include>
+    </coverage>
 </phpunit>
diff --git a/test/ComponentInstallerTest.php b/test/ComponentInstallerTest.php
index df23695..a03e22a 100644
--- a/test/ComponentInstallerTest.php
+++ b/test/ComponentInstallerTest.php
@@ -26,6 +26,7 @@
 use org\bovigo\vfs\vfsStreamDirectory;
 use PHPUnit\Framework\TestCase;
 use Prophecy\Argument;
+use Prophecy\PhpUnit\ProphecyTrait;
 use Prophecy\Prophecy\ObjectProphecy;
 use ReflectionObject;
 
@@ -40,6 +41,8 @@
 
 class ComponentInstallerTest extends TestCase
 {
+    use ProphecyTrait;
+
     /**
      * @var vfsStreamDirectory
      */
@@ -1258,7 +1261,7 @@ public function testOnPostPackageUninstallRemovesPackageFromConfiguration()
         $this->assertNull($this->installer->onPostPackageUninstall($event->reveal()));
 
         $config = file_get_contents(vfsStream::url('project/config/application.config.php'));
-        $this->assertNotContains('Some\Component', $config);
+        $this->assertStringNotContainsString('Some\Component', $config);
     }
 
     public function testOnPostPackageUninstallCanRemovePackageArraysFromConfiguration()
@@ -1305,8 +1308,8 @@ public function testOnPostPackageUninstallCanRemovePackageArraysFromConfiguratio
         $this->assertNull($this->installer->onPostPackageUninstall($event->reveal()));
 
         $config = file_get_contents(vfsStream::url('project/config/application.config.php'));
-        $this->assertNotContains('Some\Component', $config);
-        $this->assertNotContains('Other\Component', $config);
+        $this->assertStringNotContainsString('Some\Component', $config);
+        $this->assertStringNotContainsString('Other\Component', $config);
     }
 
     public function testModuleIsAppended()